Roughly four weeks after the spill took place, many basic details are still unknown to the public, according to recent reporting by InsideClimate News. Questions include what exactly caused the spill, how big was the spill exactly, and how long did it take for emergency responders to react to the spill, to name a few.

But one thing is certain according to the new study: For the residents of Mayflower, quality of life has been changed forever.

All of these chemicals are hazardous air pollutants (HAPs), “regulated under the 1990 Federal Clean Air Act amendments as the most toxic of all known airborne chemicals,” as explained in the press release summarzing the study.

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